operation.
2-72 Change 1
Table 2-3. Caution/Advisory and Warning Light Lighting Parameters (Cont)
LEGEND ILLUMINATING PARAMETER OR FAULT
TAIL XMSN OIL TEMP Tail gear box oil temperature is excessive.
SAS OFF Hydraulic pressure supplied to the SAS actuator is below minimum.
IFF Mode 4 is not capable of responding to interrogation.
CHIP TAIL XMSN Indicates a metal particle has been detected by the chip detector.
APU FAIL APU was automatically shut down by the electrical sequence unit.
TR DE-ICE FAIL Indicates a short or open in a tail rotor blade deice element.
#2 RSVR LOW Hydraulic .uid level has dropped below about 60% of full capacity.
#2 FUEL LOW Flashes when right fuel level is about 172 pounds.
#2 FUEL PRESS Right engine fuel pressure between engine-driven low-pressure fuel pump and high-
pressure fuel pump is low.
#2 ENG OIL PRESS Right engine oil pressure is too low for continued operation.
#2 ENGINE OIL TEMP Right engine oil temperature is above 150°C.
CHIP #2 ENGINE Right engine chip detector in scavenge oil system has metal chip or particle buildup.
#2 FUEL FLTR BYPAS Right engine fuel .lter has excessive pressure differential across .lter.
#2 ENGINE STARTER Right engine start circuit is actuated.
#2 PRI SERVO PRESS Second stage pressure is shut off, or has dropped below minimum, or servo pilot valve is
jammed.
#1 TAIL RTR SERVO Pressure to the .rst stage tail rotor servo is below minimum, or servo pilot valve is
jammed.
APU OIL TEMP HI APU oil temperature is above the maximum.
TRIM FAIL Indicates that yaw, roll, or pitch trim actuators are not responding accurately to computer
signals.
RT PITOT HEAT Indicates right pitot heat element is not receiving power with PITOT HEAT switch ON.
CHIP INPUT MDL-RH Indicates a metal particle has been detected by the chip detector.
CHIP ACCESS MDL-RH Indicates a metal particle has been detected by the chip detector.
ICE DETECTED Indicates that ice has been detected.
BACK-UP RSVR LOW Hydraulic .uid level has dropped below about 60% of full capacity.
ADVISORY LEGENDS
#1 ENG ANTI-ICE ON Indicates that No. 1 engine anti-ice/start bleed valve is open.
APU ON APU is operative.
APU ACCUM LOW APU accumulator pressure is low.
#1 MFD MALF IO code failure of MFD.
#1 INL ANTI-ICE ON Indicates that No. 1 engine inlet anti-icing air temperature is 93°C or above.
APU GEN ON APU generator output is accepted and being supplied to the helicopter.
Table 2-3. Caution/Advisory and Warning Light Lighting Parameters (Cont)
LEGEND ILLUMINATING PARAMETER OR FAULT
SEARCH LT ON Either pilot or copilot has selected SRCH LT switch is on.
CARGO HOOK OPEN Indicates that cargo hook load beam is not latched.
PARKING BRAKE ON Indicates that PARKING BRAKE handle is pulled.
#2 INL ANTI-ICE ON Indicates that No. 2 engine inlet anti-icing air temperature is 93°C or above.
PRIME BOOST PMP ON Prime boost pump switch is at PRIME or BOOST.
LDG LT ON Either pilot or copilot has selected LDG LT ON.
HOOK ARMED The cargo hook release system is armed.
EXT PWR CONNECTED Indicates that external power plug is connected to helicopter’s EXT POWER connector.
#2 ENG ANTI-ICE ON Indicates that No. 2 engine inlet anti-ice/start bleed valve is open.
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